Testicular torsion, or testis torsion, is an emergency condition. It happens when the spermatic cord, which provides blood flow to the testicle, rotates and becomes twisted. The twisting cuts off the testicle's blood supply and causes sudden pain and swelling.
What is NuGold? NuGold, also called red brass, Merlin's Gold, and Jeweler's Bronze, is an alloy that usually contains 85% copper and 15% zinc. It tarnishes similar to copper. I have pieces that have been in my sample trays for several months that barely show a tarnish.
Nuclide, also called nuclear species, species of atom as characterized by the number of protons, the number of neutrons, and the energy state of the nucleus. A nuclide is thus characterized by the mass number (A) and the atomic number (Z). To be regarded as distinct a nuclide must have an energy content sufficient for a measurable lifetime, usually more than 10 second.